Ting Fan, Zeyi Zhang
Shanghai Zhuoyue Ruixin Digital Technology Company limited, Shanghai, China.
School of Physical Education and Health Care, East China Normal University, Shanghai, China.
Front Bioeng Biotechnol. 2024 Aug 27;12:1441027. doi: 10.3389/fbioe.2024.1441027. eCollection 2024.
This study aimed to analyze the biomechanical characteristics of the lower limb in patients with patellofemoral pain (PFP) while walking under different sensory integration tasks and elucidate the relationship between these biomechanical characteristics and patellofemoral joint stress (PFJS). Our study's findings may provide insights which could help to establish new approaches to treat and prevent PFP.
Overall, 28 male university students presenting with PFP were enrolled in this study. The kinematic and kinetic data of the participants during walking were collected. The effects of different sensory integration tasks including baseline (BL), Tactile integration task (TIT), listening integration task (LIT), visual integration task (VIT) on the biomechanical characteristics of the lower limb were examined using a One-way repeated measures ANOVA. The relationship between the aforementioned biomechanical characteristics and PFJS was investigated using Pearson correlation analysis.
The increased hip flexion angle ( = 0.016), increased knee extension moment ( = 0.047), decreased step length ( < 0.001), decreased knee flexion angle ( = 0.010), and decreased cadence ( < 0.001) exhibited by patients with PFP while performing a VIT were associated with increased patellofemoral joint stress. The reduced cadence ( < 0.050) achieved by patients with PFP when performing LIT were associated with increased patellofemoral joint stress.
VIT significantly influenced lower limb movement patterns during walking in patients with PFP. Specifically, the increased hip flexion angle, increased knee extension moment, decreased knee flexion angle, and decreased cadence resulting from this task may have increased PFJS and may have contributed to the recurrence of PFP. Similarly, patients with PFP often demonstrate a reduction in cadence when exposed to TIT and LIT. This may be the main trigger for increased PFJS under TIT and LIT.
本研究旨在分析髌股疼痛（PFP）患者在不同感觉整合任务下行走时下肢的生物力学特征，并阐明这些生物力学特征与髌股关节应力（PFJS）之间的关系。我们的研究结果可能会为建立治疗和预防PFP的新方法提供见解。
本研究共纳入28名患有PFP的男性大学生。收集了参与者行走过程中的运动学和动力学数据。使用单向重复测量方差分析检验了包括基线（BL）、触觉整合任务（TIT）、听觉整合任务（LIT）、视觉整合任务（VIT）在内的不同感觉整合任务对下肢生物力学特征的影响。使用Pearson相关分析研究上述生物力学特征与PFJS之间的关系。
PFP患者在进行VIT时出现的髋关节屈曲角度增加（=0.016）、膝关节伸展力矩增加（=0.047）、步长减小（<0.001）、膝关节屈曲角度减小（=0.010）和步频降低（<0.001）与髌股关节应力增加有关。PFP患者在进行LIT时实现的步频降低（<0.050）与髌股关节应力增加有关。
VIT显著影响PFP患者行走时的下肢运动模式。具体而言，该任务导致的髋关节屈曲角度增加、膝关节伸展力矩增加、膝关节屈曲角度减小和步频降低可能增加了PFJS，并可能导致PFP复发。同样，PFP患者在接触TIT和LIT时通常会表现出步频降低。这可能是TIT和LIT下PFJS增加的主要触发因素。
